MCI J4500 2025–2026 — technical service bulletin
Bulletin ITS61592 · NHTSA communication 11037436 · issued Sep 17, 2026
Technical service bulletin
communication type
Exterior Lighting
component
2025–2026
model years
2
vehicle entries
Official summary
Instructions for uploading the latest program to add theme lights
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.